Stem winding and setting mechanism for watches



C. I. FURBISH. STEM WINDING AND SETTING MECHANISM FOR WATCHES.

AI PLICAT|ON FILED APR.22, 1920- 1,354,179.

Patented Sept. 28, 1920.

2 SHEETS-SHEET I.

C. I. FURBISH. STEM WINDING AND SETTING MECHANISM FOR WATCHES.

APPLICATION FILED APR-22, I920- 1,354,179. PatentedSept. 28, 1920.

2 SHEETS-SHEET 2.

WITA/EJSES UNITED sures PATENT OFFICE.

. CHARLES I. FURBI E, OF AMESBUBY, MASSACHUSETTS.

Y Application filed April 22,

. which the following is a specification.

Pendent set and winding watches are usually wound by a forward rotarymovement of the stem, the backward movement of the stem idling. Thi results in a strain on the winding mechanism and an unnecessary wear thereof because of the lost motion besides consuming some considerable time in the winding operation when the spring is fully run down.

The present invention provides for a positive winding of the spring at each forward and backward rotation of the stem when the winding. mechanism of the watch is thrown into gear, thereby avoiding unnecessary movement, wear, strain and loss of time.

The drawings illustrate a preferred embodiment of the invention. However, it is to be understood that'in adapting the same to meet different conditions ,various changes in the form, proportion and minor details of construction may be resorted to without departing from the nature of the invention as claimed hereinafter.

Referring tothe drawings hereto attachedz- V Figure 1-is a rear view of a watch movement provided with stem winding and setting mechanism embodying the invention, and showing the parts in position for winding the spring.

Fig. 2 is a view similar to Fig; 1 showing the relation of the parts when the winding mechanism is thrown out of gear and the setting mechanism is thrown into gear.

Fig. 3 is a sectional detail of the stem winding and setting mechanism showing the parts on a larger scale. 1

Fig. 1 is a sectional detail on the line 4-4. of Fig. 1 illustrating the parts on a larger scale.

Fig. 5 is a sectional detail on the line 5-5 of Fig. 4.

Fig. 6 is a detail section on the line 66 of Fig. 4, looking in the directlon of the arrow. 7

Corresponding and like parts are referred to inthe following description and indicated Specification of Letters Patent.

STEM WINDING AND SETTING MECHANISM FOR WATCHES.

Patented Sept. 28, 1920.

1920. Serial No. 375,737.

in the several views of the drawings by like reference characters.

The watch movement illustrated may be of ordinary construction and. comprises the usual bow or drum 1 which receives the operating spring. The bow or drum 1 is toothed as indicated at 2 to cooperate with a detent 8 and a winding gear el. The winding gear 4 is provided with crown teeth which are in mesh with pinions or gear elements 6 and '7 which are disposed at diametrically opposite points and receive a reverse movement. The pinions or gear elements 6 and 7 occupy a relative fixed. posit1on and are in mesh with the crown teeth 5 of the gear wheel a at all times. The gear wheel l is likewise in mesh with the teeth 2 of the barrel or drum 1 at all times. A shaft 8 passes through the gear elements 6 and 7 and the latter are loose thereon whereby the shaft 8 may rotate in either direction without imparting any movement to either one of the gear elements 6 or 7. Clutch members 9 and 10 are mounted upon the shaft 8 and are rotatable therewith and are free to move thereon toward and away from the respective gear elements 6 and '7. The faces or sides of the clutch members 9 and 10 adjacent the respective pinions or gear elements '3 and 7 are provided with ratchet teeth which are adapted to mesh with corresponding ratchet teeth formed on the adjacent sides or faces of the respective pinions or gear elements. The ratchet teeth between the elements 6 and 9 face in an opposite direction to the ratchet teeth formed on the adjacent faces of the elements 7 and 10 so that when one set of teeth is in action to effect rotation of the winding gear 4, the other set of ratchet teeth is idling or riding one upon the other. t will thus be understood that the winding gear at is positively rotated at each forward and backward rotation of the shaft 8. The portions of the shaft 8 receiving the elements 9 and 10 are of non-circular form in cross section and the openings in the clutch members are of like formation so that the parts 9 and 10 rotate the same directionv and their free ends en: gage annular groovesformed 1n the respec-.'

tive clutch membe rs 9 and 10; The spring arms 12 and 13 serve to yieldably'hold the teeth of the clutch members 9 and 10 in enthereof as-indicated most clearlyin Fig. 4.

The stem 15 is freely movable in the shaft 8 and its lower end is adapted to engage one end of a lever 16 which is ,pivotally mount- .edmidway of its ends, the opposite end of the lever 16 engaging the lowerend of the Y yoke 11. WVhen the stem- 15 is pressedinward the lever 16 is operated to effect a movement of the yoke 11 whereby the spring 7 arms 12 and 13 are moved so as to throw the clutch'member's 9an'd 10 into clutched engagement with the respective gear elements 6 and 7. Fig. 1. The numeral 17 designates theusual-pendent which, in the present instancdengages the outer endof the shaft 8 and has sliding engagement therewith. The outer end of the stem 15 enters an opening in the inner end of the pendent 17. Fig. 4. Under normal conditions, the pendent 17 is moved outward thereby relieving the lever 16 of any controlling influence of the stem 15 withthe result that theyoke 11 under the influence of the spring 14 assumes a position to throw the clutch members 9 and 10 out of'engagement with the respective elements 6 and 7 as shown most clearly in Fig. 3. VVhenthe pendent 17 is pressed inward, it engages and effects a corresponding inward movement of the stem 15 whereby the lever 16 is operated and 7 causes the yoke 11 to move whereby to throw theclutch members 9 and 10 into engagement with the respective pinions; or

gear elements 6 and 7. The spring may now be wound at'each forward and back ward rotation of the stem as will be readily understood.

understood. When the winding mechanism is in gear, as shown most clearly in Figs. 1

and 4, the setting mechanism is out. of gear and vice versa. 7

Having thus fully described my invention bored to receive a crown teeth 18- which,

what is claimed as new and desired to secure by Letters Patent, is 7 1. 2' winding mechanism for a time movement the same comp'risinga winding gear, an operating stem'and'intermediate gearing between the winding gear and operating stem and embodying ahratchet connection whereby a continuous winding may be ef fected by a forward and a backward rotation of the operating stem. I V

2. A winding'mechanism for time movements comprising a winding gear, a shaft, gear elements loose on the shaft and having gear and clutch members in cooperative relation with the gear elementsandhavlng are.-

a meshing engagement with the winding ,1,

verse ratchet engagement, therewith where I by a continuous winding may be eifected'by a forward and a backward rotary movement of the shaft. 7 V J g V V 3. A winding mechanism of the character specified, comprising a winding gear, a

shaft, gear elements, loose on the shaft and in mesh with the winding gear at diametri cally opposite points and clutch. members mounted on the shaft to rotate therewith and having a limited longitudinal movement thereon and having reverse ratchet engagement with. the respective gear elements whereby to efiect a continuous positive rotary movementof the winding gear at each forward and backward rotation of the shaft.

4. In winding mechanism of the character specified, a winding gear, a shaft, gear elements loose on they shaft and in meshing engagement with the winding gear at diametrically oppositev points, clutch members mounted on the shaft to rotate therewith and having a limited longitudinal movement thereon and having reverse ratchet engagement with the respective gear elements, spring means; in cooperative relation with the gear elements to yieldably hold them in a given position and manually op,-

winding may be effected by forward and backward rotation of the shaft. 7 V r 5. In winding mechanism of the character set forth, a winding gear, a shaft, gear elements loose on the shaft and in meshing engagement with the winding gear at diametrically opposite points, clutch members erable meansfor moving the clutch members .mto des red position whereby a continuous loose on the shaft and rotatable therewith.

gear elements in cooperative relation with the winding gear and disposed at diametrically' opposite points, each including a ratchet mechanism, the one being the reverse of the other, a yoke, spring arms projecting from the yoke and engaging the relatively movable parts of the aforesaid gear elements, and means for operating the yoke to throw the gear elements into cooperative engagement.

7 lVinding mechanism of the character set forth, comprising a winding gear, a shaft, gear elements loose on the shaft and in meshing engagement with the winding gear at diametrically opposite points. clutch members rotatable with the shaft and loose thereon, a pivoted yoke, spring arms projecting from the yoke and engaging the clutch members, the latter having reverse ratchet engagement with the respective gear elements and a manually operable part for actuating the yoke to yieldably hold the clutch members in ratchet engagement with the respective gear elements.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES I. FURBISH. Witnesses: I

JOHN P. TITCOMB, HAROLD P. GALE. 

